Engine-frame



H. 0. BAKER.

ENGINE FRAME.

APPLICATION FILED .|UNE19, 1918 Patented Apr. 13,

H. 0. BAKER.

ENGINE FRAME.

APPLICATION man JUNEIQ. 1918.

1,335,715, l A Patented Apr. 13, 1920.

4 SHEETS-SHEET 2.

H. 0. BAKER.`

ENGINE FRAME.

APPLICATION. FILED IuNE I9. I9I8.

1,336,715. Patented Apr. 13, 1920.

4 SHEETS-SHEET 3.

Ill/IIA DmQerU-OP H. 0. BAKER.

ENGINE FRAME.

A-PPucATlonmED1uNE19, 1918.

1,336,715, A .8 Patented Apr. 13,1920.

p-r 664 SHEETS-SHEET 4. fig 8' n JE ,Il n 70 l IMF( 7S 78 @o FZIf/;. S,

6 8 of 70 Irv/euhm wieg-@ww UNTTED sTATEs PATENT oEErcE.

HARTLEY O. BAKER, OF PUEBLO, COLORADO, ASSI'GNOR TO THE BAKER STEAM MOTOR CAR AND MANUFACTURING CO., INC., OF PUEBLO, COLORADO.

ENGINE-FRAME.

Specification of Letters Patent. Patented Apr;V 13 1920.

Application ytiled. June 19, 1918. Serial No. 240.827. l

To all whom it may concern:

Be it known that I, HARTLEY O. BAKER, a citizen of the United States, residing at Pueblo, in the county of Pueblo and State of Colorado, have invented certain new and useful Improvements in Engine- Frames;

and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to engines, and

more particularly to fluid expansion engines, the principal object of the invention being to improve' and simplify the details of construction thereof.A

Another object of the invention is to provide an engine of the above stated character adapted to be attached to a standard rear axle housing and embodying means for sup- 'porting the differential unit within said axle housing. V

With these and other objects in nview as will appear as the description proceeds, the invention comprises the various novel vfeatures of construction, combination and arrangement of parts as will be fullyY described hereinafter and afterward specifically claimed.

In order that the construction and operation of the invention may be readily comprehended by those skilled' in the art to which the invention relates, I have illustrated an approved embodiment of my 1nvention in the accompanying drawings, in

which- Figure lrepresents a sectional plan vlew through a fluid expansion engine of the slide valve type connected up to a standard rear axle housing. n n

Fig. 2 represents a vertical longitudlnal sectional view taken on a plane ,indicated by the line 2-2 on Fig. 1. n

Fig. 3 represents a transverse sectional view taken on a plane indicated by the line 3 3 on Fig. 1. Y

Fig. 4 represents a transverse sectional viewl taken-on a plane indicated by the line.

Fig. 5 4re resents a similar view taken on a plane indicated by the line 55 on Fig. 1.

Fig. 6 represents a side elevation of one of the main engine frame members.

Fig. 7 represents a top plan view thereof.

Fig. represents a bottom plan view of the engine casing.

Fig. 9 representsa side elevation of the casing.

Fig. 10 represents a top plan view of the casing.

Fig. 11 represents a slide valves 3, allof said parts being of the usual construction in engines of this type. One end of each cylinder is closed by a head plate 4, whilethe opposite'ends of said cylinders are closed by a single head plate 5.

6 is an auxiliary head plate spaced from the head plate 5.v 7 indicate the usual istons and.8 the piston rods which are sidably mounted through the head plates 5 and 6 and integral bearing sleeves 9 carried by said head plates.y

-Each ofk he slide valves 3 is fixed to a valve rod 10 also slidably mounted through the head plates 5 and 6 and in integral bearing sleeves 11 carried. by these head plates. vAn oil pan 12 is connected between the head plates 5 and 6l concentrically of each of the piston rods 8, as clearly shown in Figs. 1 and 5, to receive a quantity of oil,v

to lubricate the istonrod 8.

The main engine frame comprises a pair ofside frames, each of which embodies upper and lower bars 13 arid 14 'connected at their rear ends by forward ends are bent laterally to provide attachin flanges 16 which are secured to the auxi iary head plate 6 by bolts 17. The

rear portion of each side frame is cut away, as at 18, and reinforced at this point by webs 19 extendin downwardly and outwardly to an attac ing ian e 20. 21 indicates a semicircular fiange adjacent the rear portion of the frame and carries a similar shoulder 22. A hanger projects from the rear end of the frame and embodies a,

lon itudinal/sectional l view taken on a plane in icated by the line a part 15, while their bracket 23 and a strap 24 detachably con.-

nected to the latter by bolts 25.

These side frames are arranged in spaced relation to each other so that the flanges 21 and the shoulders 22 will coperate to provide a ianged ring adapted to be connected to a standard rear aXle housing 26 by bolts 27 so that the hangers will project'into the housing to support the differential unit 28 in operative position. 29 are the usual or standard rear axles which project through adjustable collars 30 into the dii'ierentiai unit. YThese collars are threaded into the hangers and are adapted lto be adjusted against the hubs 31 of the dierential unit to adjust the driving gear 32 thereoif laterally, said collars being held in adjusted position through the medium of locking keys 33 carried by the hangers. 34 indicates the usual cover plate on the axle housing which can be removed in order to take out the differential unit from the rear.

The main engine crank shaft 35'is mounted in suitable bearings 36 in the side frames and held in place by bearing straps 37. Cranks 38 are fixed to the opposite ends of the crank shaft and are connected to the cross'heads 39 carried by the piston rods 8 by connecting rods 40.

Each cros'shead consists of a hollow tapered block, as clearly shown in Figs. 2 and 4, within which the forward end oi' each connecting rod 40 is pivoted by a pin 41. 42 indicates a transverse opening in the head block for access to the clamping nut 43 on the rear end of the piston rod 8. The upper and lower edges of the cross head block are provided with tongues 44 to slidably it within the grooves 45 of cross head shoes 46 adjustably mounted on the cross head block by screws 47 threaded through the angular ends 48 of the shoes and into the head portion of the cross head block. The outer surfaces of the shoes 46 are convexed to slide within the concaved wear plates 49 carried by the cross head guides or brackets 50 supported by the arms 13 and 14 of the side frame.

Locking screws 51 extend through the cross head block into engagement with the shoes 46 and serve to hold the shoes in adjustedposition. By this construction as just described, it will be apparent that any wear between the cross head proper-and its respective uides can be taken up by the adjustment o the shoes 46. A

The valve gearing embodying means for reversing the position of the valves with respect to the piston stroke is operatively associated with the main driving gear 52.

fixed on the crank shaft 35 and provided with an internal gear 53.` A pinion 54 meshes with the internal gear 53 and is supported by the shorter arm 55 of a yoke 56, said yoke being provided with a longer' resem@ arm 57 rotatably mounted onv the crank shaft, as clearly shown in F ig. 31;. .The main gear 52 meshes with the differential driving gear 32 so that the power from the engine may be transmitted directly to the rear axles. A gear sleeve 58 is loosely mounted on a crank shai't and meshes with the pinion 54 and with a gear 59 mounted on a stub shaft .journaled in bearings 60. yEccentrics 6l are fixed to opposite sides of the gear 59 and are connected to the valve rods 10 by rods 62.

A 'tubular casing 63 is positioned around the engine structure and has one end resting upon and bolted to the shoulder on the rear face of the head plate 5, while its other end is slightly reducely to it the annular shoulders A22 of the engine frames, said end being boltedto the shoulders to form an oil-tight joint. The opposite sides of the casing are provided with openings which are covered by plates 66, said plates being each provided circumferentially with a rib 67 to lit a corresponding groove in the casing. rThese plates are clamped in position by a set-screw 68 passing through a pivotal bar 69, the ends of which are adapted to lockingly engage behind lugs 70.` rlhe opposite sides of the casing are also provided adjacent the forward end with hand-holds 71 covered by plates 72 bolted to the casing, whereby access may be had to the oil pans 12 in order to refill them when necessary.

An opening 73 is formed in the top oi the casing andcovered by a plate 74 bolted to the casing. As shown m Fig. 2, the upper end of the yoke 56 projects up through the casing and 'into a housing 75 through one end of which is slidably mountedthe gear shifter rod 76, said rod being pivotally connected to the yoke 56. The casing is also provided in its top adjacent the forward end with an opening 77 covered by a slide plate 78 adapted to have one edge slid under a pair of lugs 79 and its opposite edge secured to the casing by a thumb screw80.

By constructing the various parts of the engine as hereinbefore described, it will be apparent that the same can be quickly and readily assembled and disassembled and that Sincel the operation of this engine with-v the exception ofthe reversing valve gear is `means is provided for supporting the di'erthe same as al1 engines of this type, it is not thought necessary to enter into a detailed description of its operation. It may be stated that the valve reversing gear may be actuated by the rod 76 to reverse the position of the slide valves 3 with respect to the pistons 7 so that the engine can be reversed. However, this reversing valve gear forms the subject-matter of a separate application in which the details of construction and operation have been clearly set forth.

While I have described the general details of construction and-arran ement of the various parts of the engine, I esire to have it understood that such changes in construction and arrangement of parts may be made when desired, as come within the scope o the appended claims.

1. An automobile propulsion mechanism embodying a rear axle housin engine c linders having a head plate, a rame rigidly connected at one end to said head plate and extending to the axle housing, a crank shaft mounted in said frame, and a casing inclosing said frame-and connected at one end to said head plate, said frame having supporting means adjacent to the axle housmg. to which the other end of the casing is fitted and secured, and the frame having an outstanding iange projectin beyond said supoutstanding -iiange rigi ly secured to the axle housing, said frame having a shoulder adjacent to the flange, and brackets extending beyond the flange into the axle housin and embracing the axles, a crank sha mounted in said frame and connected with said diii'erential gearing, and a casing inclosing the frame and connected at one end to said head plate and secured at its other end on said shoulder, said frame and casing fitting' together at points along their lengths to brace one another.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HARTLEY O. BAKER. 

